<div class="test-container">
    <div class="test-header">
        <div>
            <button onclick="addDefault()">Default Transaction</button>
            <button onclick="addDelta()">Delta Transaction</button>
            Transaction took: <span id="transactionDuration">N/A</span>
        </div>
    </div>
    <div id="myGrid" class="test-grid"></div>
</div>
